Thursday (17-September-2020) — New Jersey

Summertime Backyard Nature in New Jersey.

I noticed several articles on the net about scientists testing the 3,200 megapixel camera for the Vera Rubin Observatory’s telescope by taking an image of a Romanesco broccoli. It didn’t look like the Broccoli that I am familiar with but was fascinated by the Fractal pattern. Romanesco broccoli was available online at Whole Foods so I ordered one for my weekly grocery delivery. It looks more like a Cauliflower, but green with Fractal like towers. I used it to create my version of a high-resolution focus-stacked image. I set up a Leica SL2 camera with a 50 mm f/1.4 lens on a tripod with a 10 cm focusing rail. The SL2 camera has the capability to take 187 megapixel images using pixel shifting technology via a Multishot mode (available after a Firmware 2.0 update). I took 87 high-resolution images (ISO 50, 50 mm, f/1.4, 1/10 sec) moving the camera forward in ~1 mm intervals. This resulted in 16,269 megapixels of data. The images were processed with Capture One Pro and then Helicon Focus to afford the following focus-stacked (12510 x 10008 pixel, 717 MB) images. The images is in focus for the full depth of the Romanesco broccoli. I love the natural Fractal patterns. You can see that there are some sections where black mold has started growing. Now to clean it up and figure out how to cook it for dinner.

High-Resolution Focus Stacked image of Romanesco Broccoli. (David J Mathre)
Romanesco broccoli. Composite of 87 focus-stacked images taken with a Leica SL2 camera and 50 mm f/1.4 lens (ISO 50, 50 mm, f/1.4, 1/10 sec, multi-shot mode). Images processed with Capture One Pro and Helicon Focus (Method A (contrast), Radius 8, Smoothing 4). (David J Mathre)
High-Resolution Focus Stacked image of Romanesco Broccoli. (David J Mathre)
Romanesco broccoli. Composite of 87 focus-stacked images taken with a Leica SL2 camera and 50 mm f/1.4 lens (ISO 50, 50 mm, f/1.4, 1/10 sec, multi-shot mode). Images processed with Capture One Pro and Helicon Focus (Method B (Depth Map), Radius 8, Smoothing 4). (David J Mathre)
High-Resolution Focus Stacked image of Romanesco Broccoli. (David J Mathre)
Romanesco broccoli. Composite of 87 focus-stacked images taken with a Leica SL2 camera and 50 mm f/1.4 lens (ISO 50, 50 mm, f/1.4, 1/10 sec, multi-shot mode). Images processed with Capture One Pro and Helicon Focus (Method C (Pyramid), Smoothing 4). (David J Mathre)


High-Resolution Focus Stacked image of Romanesco Broccoli cropped 1x, 2x, 4x, 16x, 32x. Individual images in the slideshow are available in my PhotoShelter Gallery.

Morning at the Birdfeeders: Mourning Dove, Red-bellied Woodpecker, Blue Jay, American Crow, Black-capped Chickadee, Tufted Titmouse, White-breasted Nuthatch, Gray Catbird, House Finch, American Goldfinch, Song Sparrow, Northern Cardinal, and Rose-breasted Grosbeak.


Afternoon at the Birdfeeders. Individual images in the slideshow are available in my PhotoShelter Gallery.

Contact me if you are interested in a Time-lapse Video of this session at the Birdfeeders. My setup for the birdfeeder images is a Nikon D850 camera and 200 mm f/2 VR lens set to take one image every 5 seconds over a 5 hour period (~3600 images). The new time-lapse video format is 720p (1080 x 720 pixels) and 1 frame/second. The length of the video is about 1 hour in a 1 GB MP4 file. The previous time-lapse videos of the birdfeeders were at 12 frames/second, and to be honest were too fast to identify the birds.

Daily Electric Energy Used (34.9 kWh) from Sense. Daily Solar Electric Energy Produced (35.0 kWh) from Sense and SolSystems. Sun and clouds. A surplus of 0.1 kWh.

Author: David Mathre

I am a scientist by training (Eckerd College, BSc; Caltech, Ph.D.). I worked for 27 years as a Chemist in the Pharmaceutical Industry developing processes to manufacture medicines for human and animal health. I now spend my time as a photographer and world traveler. My interests include the natural world, wildlife, landscapes, sky, and seascapes, travel, and astrophotography. I look for unique ways of viewing the world and presenting my images. I have traveled to over 55 countries in six continents, often on Semester at Sea voyages. While at home in New Jersey, I spend time on home renovation and expansion of a wildflower garden/meadow.

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